Top Definition
A term used by Dr. Farnsworth in Futurama, used to describe the act of sex, similar referances include 'horizontal monster mash' and 'the matress mambo. More funny than a real referance.
Yes, we played pelvic peaknuckle once.
by IMac Bunny Killer July 30, 2006
this term came from an 80's movie before futurama even thought about it saying it yes its slang for sex
me and old boy/girl did the pelvic peaknuckle last night
by movie watcher March 27, 2010
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